IBM 84903bu User Guide - Page 33

System-board, Installation, guidelines

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System-board LEDs The following illustration shows the light-emitting diodes (LEDs) on the system board. System fan 3 error (LED2) System fan 1 error (LED3) Standby power good (LED1) Mini-BMC heartbeat error (LED10) VRD good (LED11) System fan 2 error (LED13) DIMM 4 error (LED14) DIMM 3 error (LED15) DIMM 2 error (LED16) DIMM 1 error (LED17) For more information about the system-board LEDs, see the Problem Determination and Service Guide on the IBM xSeries Documentation CD. Installation guidelines Before you install options, read the following information: v Read the safety information that begins on page v, the guidelines in "Working inside the server with the power on" on page 20, and "Handling static-sensitive devices" on page 21. This information will help you work safely. v Observe good housekeeping in the area where you are working. Place removed covers and other parts in a safe place. v If you must start the server while the cover is removed, make sure that no one is near the server and that no tools or other objects have been left inside the server. v Do not attempt to lift an object that you think is too heavy for you. If you have to lift a heavy object, observe the following precautions: - Make sure that you can stand safely without slipping. - Distribute the weight of the object equally between your feet. - Use a slow lifting force. Never move suddenly or twist when you lift a heavy object. - To avoid straining the muscles in your back, lift by standing or by pushing up with your leg muscles. v Make sure that you have an adequate number of properly grounded electrical outlets for the server, monitor, and other devices. Chapter 2. Installing options 19

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System-board
LEDs
The
following
illustration
shows
the
light-emitting
diodes
(LEDs)
on
the
system
board.
System fan 3 error (LED2)
System fan 1 error (LED3)
System fan 2
error (LED13)
Standby power
good (LED1)
DIMM 4 error (LED14)
DIMM 3 error (LED15)
DIMM 2 error (LED16)
DIMM 1 error (LED17)
Mini-BMC heartbeat
error (LED10)
VRD good
(LED11)
For
more
information
about
the
system-board
LEDs,
see
the
Problem
Determination
and
Service
Guide
on
the
IBM
xSeries
Documentation
CD.
Installation
guidelines
Before
you
install
options,
read
the
following
information:
v
Read
the
safety
information
that
begins
on
page
v,
the
guidelines
in
“Working
inside
the
server
with
the
power
on”
on
page
20,
and
“Handling
static-sensitive
devices”
on
page
21.
This
information
will
help
you
work
safely.
v
Observe
good
housekeeping
in
the
area
where
you
are
working.
Place
removed
covers
and
other
parts
in
a
safe
place.
v
If
you
must
start
the
server
while
the
cover
is
removed,
make
sure
that
no
one
is
near
the
server
and
that
no
tools
or
other
objects
have
been
left
inside
the
server.
v
Do
not
attempt
to
lift
an
object
that
you
think
is
too
heavy
for
you.
If
you
have
to
lift
a
heavy
object,
observe
the
following
precautions:
–
Make
sure
that
you
can
stand
safely
without
slipping.
–
Distribute
the
weight
of
the
object
equally
between
your
feet.
–
Use
a
slow
lifting
force.
Never
move
suddenly
or
twist
when
you
lift
a
heavy
object.
–
To
avoid
straining
the
muscles
in
your
back,
lift
by
standing
or
by
pushing
up
with
your
leg
muscles.
v
Make
sure
that
you
have
an
adequate
number
of
properly
grounded
electrical
outlets
for
the
server,
monitor,
and
other
devices.
Chapter
2.
Installing
options
19